how to add circuit breaker



Circuit breakers play a vital role in safeguarding our electrical systems. Whether you are building a new home or replacing an old one, knowing how to add a circuit breaker can be a valuable skill. This article will guide you through the step-by-step process of adding a circuit breaker, ensuring the safety and efficiency of your electrical setup. So, let's dive in and explore this essential electrical task.

Understanding Circuit Breakers and Their Importance:

Before we delve into the procedure, it's crucial to comprehend the significance of circuit breakers. Essentially, circuit breakers are electrical switches that automatically interrupt the flow of electricity when a circuit becomes overloaded or experiences a short circuit. Their primary purpose is to protect the electrical system from damage caused by excessive currents, preventing fires, electrical shocks, or other hazards.

Tools and Materials Required:

Before you begin the process of adding a circuit breaker, it's essential to gather the necessary tools and materials. Here are some items you'll need:

1. Safety goggles and gloves: Ensure your eyes and hands are protected throughout the process.

2. Screwdriver: A flathead or Phillips head screwdriver will be required to open electrical panels.

3. Circuit breaker: Choose the appropriate type and size of the circuit breaker required for your electrical system.

4. Wire strippers: These will be handy for removing the insulation from the wires.

5. Wire nuts: Used for securely connecting wires.

6. Wire connectors: These connectors assist in joining wires together.

7. Electrical tape: Helps insulate wires and secure connections.

Now that we've assembled everything we need, let's move on to the step-by-step process of adding a circuit breaker.

Step 1: Safety First - Turn Off the Power:

Before you begin any electrical work, it's crucial to ensure your safety. Start by turning off the power supply to the area where you will be adding the circuit breaker. Locate the main electrical panel in your home or building and switch off the corresponding circuit breaker or remove the appropriate fuse. Use a voltage tester to verify that there is no electricity flowing to the circuit you'll be working on. Safety should always be the top priority when dealing with electrical systems.

Step 2: Choose the Correct Circuit Breaker:

When selecting a circuit breaker, it's important to choose the correct type and size to ensure compatibility with your electrical system. Consider factors such as the circuit's amperage rating and the type of breaker required (e.g., single-pole, double-pole). This will prevent potential damage and ensure efficient functioning. Refer to the panel's labeling or consult with a certified electrician if you are unsure about the suitable breaker for your specific needs.

Step 3: Identify an Available Slot in the Electrical Panel:

Once you've chosen the appropriate circuit breaker, locate an available slot in the electrical panel to install it. It is important to note that electrical panels have load limits that should never be exceeded. If all the slots are occupied or the load limit is reached, consult with a professional electrician. This ensures your electrical system remains safe and functional.

Step 4: Prepare the Wires:

Before attaching the circuit breaker, prepare the wires that will connect to it. Start by removing the insulation from the ends of the wires using wire strippers. It is essential to have the correct length of exposed wire to ensure secure connections. Once the wire ends are stripped, attach wire nuts or wire connectors to the exposed ends, making sure the connections are tight and secure.

Step 5: Add the Circuit Breaker:

Now it's time to add the circuit breaker to the designated slot in the electrical panel. Begin by opening the panel's cover. Depending on the panel's design, you might need to remove screws or snap open the cover using a flathead screwdriver. Carefully line up the breaker's connection points with the panel's bus bar, ensuring a proper fit. Then, firmly press the breaker down onto the bus bar until it securely snaps into place.

Step 6: Connect the Wires:

With the circuit breaker in place, connect the prepared wires to the appropriate terminals. Ensure that the wires are securely attached to prevent any loose connections or potential hazards. The color-coded labels on the breaker and panel will guide you in making the correct connections. Once the wires are connected, double-check all the connections to ensure they are properly secured.

Step 7: Test the Circuit Breaker:

After completing the physical installation, it's crucial to test the circuit breaker to ensure it is functioning correctly. With the electrical panel cover still open, turn the power supply back on for the specific circuit. Use a voltage tester to check for power at the new circuit breaker. If there is no power, the breaker may require adjustment or replacement. Consult with a qualified electrician if you encounter any issues or uncertainties during this process.


In conclusion, adding a circuit breaker is a task that requires careful attention to detail and adherence to safety procedures. By following the step-by-step process outlined in this article, you can confidently install a circuit breaker and safeguard your electrical system. Remember, the primary goal is to ensure the safety of your home or building and its occupants. If you are ever uncertain about any aspect of adding a circuit breaker, it is always best to consult with a professional electrician.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English